Abstract
Resistance to bovine spongiform encephalopathy (BSE) that is significantly associated with insertion/deletion (indel) polymorphisms at two loci (putative promoter and intron 1) on the prion protein gene (PRNP) in cattle has been well documented. Studies suggest that the insertion alleles are related to BSE resistance. Until recently, BSE has never been reported in water buffaloes (unlike cattle). Previous studies have demonstrated that the PRNP gene in water buffalo consists mostly of insertion alleles at both loci; nevertheless, whether or not water buffaloes are genetically resistant to BSE and the role of indel polymorphisms in their resistance status is not clear. We examined the coding region of PRNP to determine the nucleotide and octapeptide-repeat (octarepeats) variations of Anatolian, Murrah and Murrah × Anatolian (M × A) water buffaloes. Three synonymous single nucleotide polymorphisms (SNP) at positions 126, 234, and 285, and a non-synonymous SNP at position 322 (G108S) were detected. Triplet G/A/T base substitutions were observed at position 126 and two additional genotypes, T/A and T/G, at this position were determined. We also found six octarepeats that indicated the presence of the wild-type PRNP6 allele in the coding region. To the best of our knowledge, this is the first report of the T/A and T/G genotypes in water buffaloes.
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Funding
This research was carried out at the Sheep Research Institute, Bandirma, Balıkesir, Turkey and funded by General Directorate of Agricultural Research and Policies (TAGEM) of Republic of Turkey Ministry of Food, Agriculture and Livestock (GTHB). Project No: TAGEM/12/02/01/05.
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All applications during the study were performed according to animal rights and the manuscript does not contain clinical studies or patient data.
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Yaman, Y., Ün, C. Nucleotide and octapeptide-repeat variations of the prion protein coding gene (PRNP) in Anatolian, Murrah, and crossbred water buffaloes. Trop Anim Health Prod 50, 573–579 (2018). https://doi.org/10.1007/s11250-017-1471-9
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DOI: https://doi.org/10.1007/s11250-017-1471-9